Search found 16 matches

by ChadsArcade
Wed Apr 10, 2019 11:48 am
Forum: hardware
Topic: My New BBC Master
Replies: 17
Views: 617

Re: My New BBC Master

Hairspray is also good for removing some types of permanent marker. I had some graffiti on a space invaders tabletop, tried all sorts and nothing would shift it. Tried spraying on some hairspray after reading about it on the internet and it wiped right off. Edit: Also, if that's sticker residue on t...
by ChadsArcade
Wed Oct 24, 2018 7:40 am
Forum: stardot.org.uk
Topic: Certificate for stardot...
Replies: 7
Views: 1169

Re: Certificatge for stardot...

All good here now, thank you!
by ChadsArcade
Wed Oct 24, 2018 5:41 am
Forum: stardot.org.uk
Topic: Certificate for stardot...
Replies: 7
Views: 1169

Re: Certificatge for stardot...

Yep, getting connection is not private errors here on Chrome, though you can continue at your own risk.
by ChadsArcade
Wed Oct 24, 2018 5:36 am
Forum: hardware
Topic: Adapting joysticks for the BBC micro
Replies: 25
Views: 1393

Re: Adapting joysticks for the BBC micro

Got your PM BitSeeker but unfortunately am not able to reply, think I may need more posts. Definitely interested though!
by ChadsArcade
Tue Oct 23, 2018 8:11 pm
Forum: hardware
Topic: Adapting joysticks for the BBC micro
Replies: 25
Views: 1393

Re: Adapting joysticks for the BBC micro

Great work! I've a competition pro stick which reckons the switch provides slo-mo in one direction. It's never really had such an effect for me on an Amiga though.

I'd also be interested in a kit or assembled unit :)
by ChadsArcade
Fri Oct 12, 2018 6:44 pm
Forum: hardware
Topic: Master 128 SCART Fun
Replies: 17
Views: 522

Re: Master 128 SCART Fun

After reading just a few posts my thoughts were the same as sbadger posted above. If your TV has multiple scart sockets you might find they are colour coded (I've seen blue and black on some sets) - only one will support RGB and the other(s) will be composite only.
by ChadsArcade
Thu Sep 13, 2018 5:58 pm
Forum: hardware
Topic: BBC B beep of death
Replies: 30
Views: 1198

Re: BBC B beep of death

The RSTA reset to the system VIA (IC3) is only low very briefly at power up. As capacitor C10 charges via resistor R20, RSTA goes to logic high. Mark Thanks for the explanation. Checking this again with my logic probe, it appears to be flickering slightly. It's not going logic low but it's certainl...
by ChadsArcade
Thu Sep 13, 2018 5:42 pm
Forum: hardware
Topic: BBC B beep of death
Replies: 30
Views: 1198

Re: BBC B beep of death

Good, the voltage test indicates that power is getting to the whole board. Focusing on the keyboard (including LEDs) and sound chip problem. I know you have tried various different chips in various positions. I recommend putting a known good working 6522 VIA in position IC3 (the system VIA) that id...
by ChadsArcade
Thu Sep 13, 2018 5:34 pm
Forum: hardware
Topic: BBC B beep of death
Replies: 30
Views: 1198

Re: BBC B beep of death

Firstly, thank you to everyone for the suggestions, it's greatly appreciated. Is pin 34 (_reset) on the system VIA (6522) high? It's high. It doesn't appear to go low when I press break, checking the schems shows it's connected to /RSTA which is basically a pull up resistor so this looks OK? /RST on...
by ChadsArcade
Wed Sep 12, 2018 11:50 am
Forum: introduce yourself
Topic: Hello from Lancs, UK
Replies: 12
Views: 695

Re: Hello from Lancs, UK

guddler wrote:
Wed Sep 12, 2018 12:49 am
Oi oi! How the devil are you!
Oi Oi Guddler! Nice to see a familiar face :) I seem to be spending a lot less time on arcade stuff and more on 8bit computers in recent times so will hopefully be spending a bit of time here :)
by ChadsArcade
Wed Sep 12, 2018 11:43 am
Forum: hardware
Topic: BBC B beep of death
Replies: 30
Views: 1198

Re: BBC B beep of death

Thanks for all the info. I checked the voltage across many of the TTL chips last night and they are a consistent 5.05v. I then turned my attention to the 40 pin sockets as I've seen single wipe sockets fail a lot on arcade boards. I've replaced 3 so far with dual wips, some pins showed tarnish/corro...
by ChadsArcade
Mon Sep 10, 2018 4:53 pm
Forum: hardware
Topic: BBC B beep of death
Replies: 30
Views: 1198

Re: BBC B beep of death

Thank you for the suggestions. I've tried S25 N, S and removed. I think the test ROM should run to a degree without working RAM anyway, if I understood it correctly. All I seem to be getting from the test ROM is the cassette relay and led switching on and off... Though I suppose this shows the CPU i...
by ChadsArcade
Mon Sep 10, 2018 11:36 am
Forum: hardware
Topic: BBC B beep of death
Replies: 30
Views: 1198

Re: BBC B beep of death

Thanks for the reply! Yes, I've been working through that thread and the links referenced. I did try removing all the unnecessary chips but still no joy. I may try this again though. When it says you should still get a banner, does this mean the "BBC Computer" text on screen should appear, even thou...
by ChadsArcade
Mon Sep 10, 2018 11:28 am
Forum: introduce yourself
Topic: Hello from Lancs, UK
Replies: 12
Views: 695

Re: Hello from Lancs, UK

Thanks for the warm welcome :) I'm enjoying my journey with the Beeb so far, nice to see such an active forum and continued development for the system.
by ChadsArcade
Sun Sep 09, 2018 4:39 pm
Forum: hardware
Topic: BBC B beep of death
Replies: 30
Views: 1198

BBC B beep of death

Hi all, I've got a BBC B I'm trying to revive and could use some help. I have a logic probe, logic comparitor and multimeter, and I know the hot end of a soldering iron :) Symptoms: beep of death, single continuous tone on boot up. No video (I'm using an RGB - SCART lead, tested good on another BBC)...
by ChadsArcade
Sun Sep 09, 2018 4:09 pm
Forum: introduce yourself
Topic: Hello from Lancs, UK
Replies: 12
Views: 695

Hello from Lancs, UK

Hello all, I've been lurking here for a while so thought it was about time I signed up and said hello. The BBC micro, along with the CBM PET and ZX81 was my first introduction to computers way back in school. I was more of as Speccy user back in the day but used to play with and program whatever I c...